Academics – Applied Heat : 2023/MAR/05
Question
Q5. A vapour compression cycle using Tetrafluoroethene (R134a) has compressor suction and discharge of 3.4966 bar and 11.595 bar respectively.
The vapour enters the compressor in a dry saturated state and leaves at a temperature of 62°C. The liquid refrigerant has 5 K of subcooling at the entry to the expansion valve.
(a) Sketch Ph and Ts diagrams.
(b) Determine EACH of The following:
(i) the isentropic efficiency of the compressor.
(ii) the dryness factor entering the evaporator.
(iii) the coefficient of Performance.
Asked in Year/Month/Ques No.
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